An apparatus and method for
processing a
crop residue, which includes but is not limited to, destroying
weed seeds present in the
crop residue. The apparatus (10) comprises an elongate housing (12) having an inlet (20) for receiving
crop residue N and an outlet (22) for discharging the
crop residue. The apparatus (10) also has one or more rotors (24), (26) located in the elongate housing (12). Each rotor (24), (26) comprises a plurality of radially extending
impact members (28a), (28b), (28c), (28d), (28e), (28f) which rotate with the one or more rotors (24), (26) and
impact against the
crop residue, so that lighter material of the
crop residue is subjected to less impacts and denser material of the crop residue is subjected to relatively more impacts.